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目的研究广州一起公园恙虫病聚集性疫情的流行特征及防控策略和措施,为今后开展类似暴发疫情的预防和控制提供参考。方法运用现场流行病学调查方法对广州一起公园恙虫病聚集性暴发疫情进行调查,采用外斐氏反应和PCR方法对病例和动物标本进行检测。结果该起公园恙虫病聚集性疫情累计发病17例,死亡3例,病死率为17.65%;病例发病以发热、肺炎等呼吸道症状为主,身体某部位均有特异性焦痂;现场调查采集公园工作人员血清标本66份,外斐氏反应全部阴性,采集公园流浪猫血标本6份和游离恙蟎105只,PCR检测结果亦均为阴性。结论可确认该公园内发生了恙虫病聚集性暴发疫情,感染地点可能与患者在公园内活动接触草坪有关。本次疫情现场防控对可能造成一定社会影响和引发公众关注的公共卫生事件提供了有效的防控经验和模式。
Objective To study the epidemiological characteristics and prevention and control strategies of tsutsugamushi disease in a park in Guangzhou and provide reference for the prevention and control of similar outbreaks in Guangzhou in the future. Methods Epidemiological survey was used to investigate the outbreak of tsutsugamushi disease outbreak in a park in Guangzhou. Specimens and animal specimens were detected by external Peijo reaction and PCR. Results The cumulative incidence of tsutsugamushi disease outbreak in the park in 17 cases, 3 patients died, the case fatality rate was 17.65%; cases of fever, pneumonia and other respiratory symptoms, body parts have specific eschar; site survey collection park Sixty-six serum samples were collected from staff members, and all negative Peijs reaction was negative. Six copies of stray cat blood samples and 105 free chiggers were collected from the park, and PCR results were also negative. The conclusion confirmed that there was an outbreak of tsutsugamushi disease outbreak in the park, which may be related to the patient’s active contact with the lawn in the park. The epidemic prevention and control on the spot provided effective prevention and control experiences and modes for public health incidents that may cause some social impacts and arouse public concern.